[NCGuy68]

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Quite a variation on the dates to the built date. Assume this is usual?

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The only casting dates that are unusal are the heads with Dec. 67 cast dates. Seems many of the 68 L78 cars got late 67 or very early 68 casting dates on certain parts.

One the other hand, many, if not most of the small blocks got casting/assembly dates much closer to the body build date. This includes the Z28 cars. A good example of this is my Van Nuys built 68 RS/Z28. All of the major components are dated within a week-to-ten days prior to the body build date. This seems to be the case with Norwood cars as well.

You may want to post the parts you need on this site under the 'Parts Wanted' section.